(f-28) I closed this about a year and a half ago because a bug was
already filed regarding the issue. For the past few days, both before
and after doing my latest weekly patches, I noticed that those "ACPI
Error" messages no longer show up while the workstation is booting. So
I'm promoting this thread from "CLOSED" to "SOLVED". My thanks to
people fixed the problem. I hope it's fixed for everyone else who
experienced the problem.